------------[ cut here ]------------ WARNING: CPU: 1 PID: 6624 at net/kcm/kcmsock.c:630 kcm_write_msgs+0x1030/0x11a4 net/kcm/kcmsock.c:630 Modules linked in: CPU: 1 PID: 6624 Comm: syz-executor.2 Tainted: G W 6.10.0-rc3-syzkaller-gac2193b4b460 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kcm_write_msgs+0x1030/0x11a4 net/kcm/kcmsock.c:630 lr : kcm_write_msgs+0x1030/0x11a4 net/kcm/kcmsock.c:630 sp : ffff8000a09f7500 x29: ffff8000a09f76c0 x28: ffff0000ccf49acc x27: 1fffe000199e9359 x26: 1fffe000195976a5 x25: 0000000000011000 x24: ffff0000cee40000 x23: dfff800000000000 x22: ffff0000ccf49ad0 x21: 0000000000000000 x20: ffff0000cacbb538 x19: ffff0000d0726240 x18: ffff0001fea889d0 x17: ffff80008efad000 x16: ffff80008055a0ac x15: 000000000000000d x14: 1ffff0001413eec0 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 0000000000019b40 x9 : ffff8000a31ab000 x8 : 0000000000019b41 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: kcm_write_msgs+0x1030/0x11a4 net/kcm/kcmsock.c:630 kcm_sendmsg+0x1c0c/0x2128 net/kcm/kcmsock.c:906 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_write_iter+0x2d8/0x448 net/socket.c:1160 new_sync_write fs/read_write.c:497 [inline] vfs_write+0x828/0xc78 fs/read_write.c:590 ksys_write+0x15c/0x26c fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:652 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 irq event stamp: 30170 hardirqs last enabled at (30169): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:387 hardirqs last disabled at (30170): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (30168): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (30168): [] release_sock+0x154/0x1b8 net/core/sock.c:3558 softirqs last disabled at (30166): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (30166): [] release_sock+0x3c/0x1b8 net/core/sock.c:3547 ---[ end trace 0000000000000000 ]--- KCM: Hard failure on kcm_write_msgs